diff --git a/libs/temporal/temporal/timeline.h b/libs/temporal/temporal/timeline.h
index c0191f9582..87efb64a11 100644
--- a/libs/temporal/temporal/timeline.h
+++ b/libs/temporal/temporal/timeline.h
@@ -74,6 +74,7 @@ class LIBTEMPORAL_API timepos_t : public int62_t  {
 	bool zero ()     const { return val() == 0; }
 
 	Temporal::TimeDomain time_domain () const { if (flagged()) return Temporal::BeatTime; return Temporal::AudioTime; }
+	void set_time_domain (Temporal::TimeDomain);
 
 	superclock_t superclocks() const { if (is_superclock()) return val(); return _superclocks (); }
 	int64_t      samples() const { return superclock_to_samples (superclocks(), TEMPORAL_SAMPLE_RATE); }
diff --git a/libs/temporal/timeline.cc b/libs/temporal/timeline.cc
index 285fb2b518..5ddce5dfab 100644
--- a/libs/temporal/timeline.cc
+++ b/libs/temporal/timeline.cc
@@ -375,6 +375,20 @@ timepos_t::timepos_t (timecnt_t const & t)
 	v = build (t.distance().flagged(), t.distance ().val());
 }
 
+void
+timepos_t::set_time_domain (TimeDomain td)
+{
+	if (td == time_domain()) {
+		return;
+	}
+
+	if (td == AudioTime) {
+		v = build (false, superclock_to_samples (_superclocks(), TEMPORAL_SAMPLE_RATE));
+	} else {
+		v = build (true, _beats().to_ticks());
+	}
+}
+
 // timepos_t timepos_t::_max_timepos (Temporal::AudioTime);
 
 timepos_t &